BAGUIO CITY—Undeterred by strong rains from Tropical Depression “Mirasol,” around 1,800 students of the University of the Philippines (UP) Baguio walked out of their classes at 1 p.m. on Wednesday to stage an indignation rally against corruption in the Department of Public Works and Highways (DPWH), particularly those involving substandard and “ghost” or nonexistent flood